Note 7 - Securities Available-For-Sale: (Detail) - Available-For-Sale Securities With Continuous Unrealized Losses: (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Less than 12 months unrealized loss	$ (309)
Less than 12 months estimated fair value	20,451
12 months or more unrealized loss	0
12 months or more estimated fair value	0
Unrealized loss	(309)
Estimated fair value	20,451
Corporate Bond Securities [Member]
Less than 12 months unrealized loss	(309)
Less than 12 months estimated fair value	20,451
12 months or more unrealized loss	0
12 months or more estimated fair value	0
Unrealized loss	(309)
Estimated fair value	$ 20,451